Shortcutting to Resolution

Three of the official shortcuts deal with announcing or asking about choices before those choices need to be made. If you cast a spell or activate an ability and declare choices that aren't normally made until that spell or ability resolves, you have to abide by those declared choices unless another player responds to that spell or ability. For example, if you cast Memoricide by saying " your Vengevines", you have to name Vengevine when Memoricide resolves unless your opponent responds to the spell.

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Planeswalker names and subtypes.

IMPORTANT UPDATE: This article has been updated as of the prerelease of Magic 2014 on July 13; Please refer to the revisions below. When one or more planeswalkers with the same subtype is in play, both will go to the graveyard when state-based actions are applied. How this works is different than the 'legend rule' as the name of the planesawlker does not matter. While there are still not a that many planeswalker cards, several planeswalkers have had more than one card created to represent them. As

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You can forget when resolving Memoricide.

instructs its controller to search for ‘any number’ of the named card in the hand, graveyard and library of the targeted player. ‘Any number’ can mean zero. This means that is is possible for a player to miss, intentionally or not, a copy of the named card in a graveyard. This is a bit different from other cards where you search a public zone, like a graveyard, for all copies of an object.

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When to pay mana for Leonin Arbiter’s ability

's static ability prevents player from searching their libraries unless they pay 2 mana. Paying this mana is a special action that can only be done when a player has priority. Technically speaking, in order to search your library you must pay this two mana before any effect that would allow you to search starts to resolve. For example, if you were to cast , you need to pay 2 mana to satisfy Leonin Arbiter's ability before passing priority to your opponent. Otherwise your opponent can pass priority

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